Some words to compare with other Earbuds: Except for the Yuin OK3, none of the above the MX580 hold a candle - the Yuin is unfortunately broke me and the Sennheiser replaced him worthy.
The AKG K317 is the MX580 does not even begin to close, except perhaps in the bass range. I change out my different listener by like, but since then I have the Sennheiser, AKG is neatly packed in its box and has been or will never be brought out here. The AKG sound compared to the MX as if you were listening through a towel music, even though I had read of the previously also much good.
The Apple Buds I find not even that bad, especially in the mid and high frequencies make them not so not much wrong. Go absolutely OK, but it alarmingly lacks bass. Although I have only heard without pads, but even then should something come on bass. Unfortunately none. Can be combined with the above methods determined pimp something, but that's not worth my effort.
The Blue Ever Blue "Black Buds" are exotics from China, offered for just under $ 20. For this money the fantastic handset is that I like to use every now and then, with a sound that that of the MX580 is not dissimilar. However, Bud the design is slightly different, one millimeter wider and deeper - and already is towards the seat and thus the best possible sound. To listen in bed or on the couch without much to move well suited, but still no match for the Sennheiser.
The only peer is in this price range as I said the Yuin OK3, which also has a similar sound with even a trace more basses. I wonder whether I should buy the again, however, the seat also here was not as good as the Sennheiser. In addition, as a rule, an import from overseas will be required, which is likely to discourage many.
So, that was now much blah, but I hope that it was one or the other seekers may be helpful.
With the Sennheiser MX580 you do definitely nothing wrong, certainly not for the money.
Strong buy recommendation for those looking for a good EARBUD.